US6485682B1ExpiredUtility

Hardened aluminum alloy for use in the manufacture of printed circuit boards

48
Priority: Nov 6, 2000Filed: Nov 6, 2000Granted: Nov 26, 2002
Est. expiryNov 6, 2020(expired)· nominal 20-yr term from priority
Inventors:Dieter Backhaus
C22C 21/06H05K 3/022
48
PatentIndex Score
1
Cited by
1
References
2
Claims

Abstract

A hardened aluminum alloy, for use in the manufacture of printed circuit boards, having elevated levels of manganese and magnesium and produced as a sheet by a cold rolling process to a specified thickness.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
       1. An aluminum alloy for use in manufacturing printed circuit boards comprising: between 0.3% and 0.4% manganese, and between 4.5% and 4.6% magnesium wherein said levels of manganese and magnesium substantially harden said alloy to a tensil strength of at least 415 MPa. 
     
     
       2. The alloy as claimed in  claim 1 , wherein said alloy is made into a sheet of a first thickness by a cold rolling process.

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